Spring's fickle weather often calls for some styling creativity — it may be warm enough to wear shorts or a chic sundress, but not without a light layer on top, just in case. Whether it's a crisp linen blazer, classic trench, or military-style anorak, you can't go wrong with an airy topper to help beat any potential chill. So we're agreeing with your mom on this one: don't leave the house without a jacket! Click through to see and shop 20 lightweight toppers to add to your sunny day looks.